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source: trunk/sources/HeuristicLab.Parameters/3.3/ValueLookupParameter.cs @ 2818

Last change on this file since 2818 was 2818, checked in by swagner, 14 years ago

Operator architecture refactoring (#95)

  • corrected several bugs in order to get SGA working
File size: 3.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.Parameters {
28  /// <summary>
29  /// A parameter whose value is either defined it the parameter itself or is retrieved from the scope.
30  /// </summary>
31  [Item("ValueLookupParameter<T>", "A parameter whose value is either defined it the parameter itself or is retrieved from or written to a scope.")]
32  public class ValueLookupParameter<T> : LookupParameter<T>, IValueLookupParameter<T> where T : class, IItem {
33    private T value;
34    [Storable]
35    public T Value {
36      get { return this.value; }
37      set {
38        if (value != this.value) {
39          if (this.value != null) this.value.Changed -= new ChangedEventHandler(Value_Changed);
40          this.value = value;
41          if (this.value != null) this.value.Changed += new ChangedEventHandler(Value_Changed);
42          OnValueChanged();
43        }
44      }
45    }
46    IItem IValueParameter.Value {
47      get { return Value; }
48      set {
49        T val = value as T;
50        if (val == null)
51          throw new InvalidOperationException(
52            string.Format("Type mismatch. Value is not a \"{0}\".",
53                          typeof(T).GetPrettyName())
54          );
55        Value = val;
56      }
57    }
58
59    public ValueLookupParameter()
60      : base() {
61    }
62    public ValueLookupParameter(string name)
63      : base(name) {
64    }
65    public ValueLookupParameter(string name, T value)
66      : base(name) {
67      Value = value;
68    }
69    public ValueLookupParameter(string name, string description)
70      : base(name, description) {
71    }
72    public ValueLookupParameter(string name, string description, T value)
73      : base(name, description) {
74      Value = value;
75    }
76
77    public override IDeepCloneable Clone(Cloner cloner) {
78      ValueLookupParameter<T> clone = (ValueLookupParameter<T>)base.Clone(cloner);
79      clone.Value = (T)cloner.Clone(value);
80      return clone;
81    }
82
83    public override string ToString() {
84      return string.Format("{0}: {1} ({2})", Name, Value != null ? Value.ToString() : ActualName, DataType.GetPrettyName());
85    }
86
87    public event EventHandler ValueChanged;
88    private void OnValueChanged() {
89      if (ValueChanged != null)
90        ValueChanged(this, EventArgs.Empty);
91      OnChanged();
92    }
93    private void Value_Changed(object sender, ChangedEventArgs e) {
94      OnChanged(e);
95    }
96  }
97}
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